Figure 2.

Lack of trans-epithelial transfer of Qdots. Qdots in 150 μl medium were added to the apical chamber of MTEC cultures derived from cells from C57BL/6J mice. Trans-epithelial Qdot transfer was assessed 24 h later by measuring fluorescence in the basal compartment medium, which did not differ significantly at any doses from control (0 nM). The positive control was 160 nM Qdots added to ALI culture medium. Data are the mean ± SEM.